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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                      *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include "replacements.h"
  28
  29 #include "jtag.h"
  30
  31 #include "command.h"
  32 #include "log.h"
  33
  34 #include "stdlib.h"
  35 #include "string.h"
  36 #include <unistd.h>
  37
  38 /* note that this is not marked as static as it must be available from outside jtag.c for those
  39    that implement the jtag_xxx() minidriver layer
  40 */
  41 int jtag_error=ERROR_OK;
  42
  43
  44 char* tap_state_strings[16] =
  45 {
  46         "tlr",
  47         "sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
  48         "rti",
  49         "sis", "ci", "si", "e1i", "pi", "e2i", "ui"
  50 };
  51
  52 typedef struct cmd_queue_page_s
  53 {
  54         void *address;
  55         size_t used;
  56         struct cmd_queue_page_s *next;
  57 } cmd_queue_page_t;
  58
  59 #define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
  60 static cmd_queue_page_t *cmd_queue_pages = NULL;
  61
  62 /* tap_move[i][j]: tap movement command to go from state i to state j
  63  * 0: Test-Logic-Reset
  64  * 1: Run-Test/Idle
  65  * 2: Shift-DR
  66  * 3: Pause-DR
  67  * 4: Shift-IR
  68  * 5: Pause-IR
  69  *
  70  * SD->SD and SI->SI have to be caught in interface specific code
  71  */
  72 u8 tap_move[6][6] =
  73 {
  74 /*        TLR   RTI   SD    PD    SI    PI             */
  75         {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16},   /* TLR */
  76         {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b},   /* RTI */
  77         {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f},   /* SD  */
  78         {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f},   /* PD  */
  79         {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01},   /* SI  */
  80         {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f}    /* PI  */
  81 };
  82
  83 int tap_move_map[16] = {
  84         0, -1, -1,  2, -1,  3, -1, -1,
  85         1, -1, -1,  4, -1,  5, -1, -1
  86 };
  87
  88 tap_transition_t tap_transitions[16] =
  89 {
  90         {TAP_TLR, TAP_RTI},             /* TLR */
  91         {TAP_SIS, TAP_CD},              /* SDS */
  92         {TAP_E1D, TAP_SD},              /* CD  */
  93         {TAP_E1D, TAP_SD},              /* SD  */
  94         {TAP_UD,  TAP_PD},              /* E1D */
  95         {TAP_E2D, TAP_PD},              /* PD  */
  96         {TAP_UD,  TAP_SD},              /* E2D */
  97         {TAP_SDS, TAP_RTI},             /* UD  */
  98         {TAP_SDS, TAP_RTI},             /* RTI */
  99         {TAP_TLR, TAP_CI},              /* SIS */
 100         {TAP_E1I, TAP_SI},              /* CI  */
 101         {TAP_E1I, TAP_SI},              /* SI  */
 102         {TAP_UI,  TAP_PI},              /* E1I */
 103         {TAP_E2I, TAP_PI},              /* PI  */
 104         {TAP_UI,  TAP_SI},              /* E2I */
 105         {TAP_SDS, TAP_RTI}              /* UI  */
 106 };
 107
 108 char* jtag_event_strings[] =
 109 {
 110         "JTAG controller reset (TLR or TRST)"
 111 };
 112
 113 /* kludge!!!! these are just global variables that the
 114  * interface use internally. They really belong
 115  * inside the drivers, but we don't want to break
 116  * linking the drivers!!!!
 117  */
 118 enum tap_state end_state = TAP_TLR;
 119 enum tap_state cur_state = TAP_TLR;
 120 int jtag_trst = 0;
 121 int jtag_srst = 0;
 122
 123 jtag_command_t *jtag_command_queue = NULL;
 124 jtag_command_t **last_comand_pointer = &jtag_command_queue;
 125 jtag_device_t *jtag_devices = NULL;
 126 int jtag_num_devices = 0;
 127 int jtag_ir_scan_size = 0;
 128 enum reset_types jtag_reset_config = RESET_NONE;
 129 enum tap_state cmd_queue_end_state = TAP_TLR;
 130 enum tap_state cmd_queue_cur_state = TAP_TLR;
 131
 132 int jtag_verify_capture_ir = 1;
 133
 134 /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
 135 int jtag_nsrst_delay = 0; /* default to no nSRST delay */
 136 int jtag_ntrst_delay = 0; /* default to no nTRST delay */
 137
 138 /* maximum number of JTAG devices expected in the chain
 139  */
 140 #define JTAG_MAX_CHAIN_SIZE 20
 141
 142 /* callbacks to inform high-level handlers about JTAG state changes */
 143 jtag_event_callback_t *jtag_event_callbacks;
 144
 145 /* speed in kHz*/
 146 static int speed_khz = 0;
 147 /* flag if the kHz speed was defined */
 148 static int hasKHz = 0;
 149
 150 /* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
 151  */
 152
 153 #if BUILD_ECOSBOARD == 1
 154         extern jtag_interface_t eCosBoard_interface;
 155 #endif
 156
 157 #if BUILD_PARPORT == 1
 158         extern jtag_interface_t parport_interface;
 159 #endif
 160
 161 #if BUILD_DUMMY == 1
 162         extern jtag_interface_t dummy_interface;
 163 #endif
 164
 165 #if BUILD_FT2232_FTD2XX == 1
 166         extern jtag_interface_t ft2232_interface;
 167 #endif
 168
 169 #if BUILD_FT2232_LIBFTDI == 1
 170         extern jtag_interface_t ft2232_interface;
 171 #endif
 172
 173 #if BUILD_AMTJTAGACCEL == 1
 174         extern jtag_interface_t amt_jtagaccel_interface;
 175 #endif
 176
 177 #if BUILD_EP93XX == 1
 178         extern jtag_interface_t ep93xx_interface;
 179 #endif
 180
 181 #if BUILD_AT91RM9200 == 1
 182         extern jtag_interface_t at91rm9200_interface;
 183 #endif
 184
 185 #if BUILD_GW16012 == 1
 186         extern jtag_interface_t gw16012_interface;
 187 #endif
 188
 189 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 190         extern jtag_interface_t presto_interface;
 191 #endif
 192
 193 #if BUILD_USBPROG == 1
 194         extern jtag_interface_t usbprog_interface;
 195 #endif
 196
 197 #if BUILD_JLINK == 1
 198         extern jtag_interface_t jlink_interface;
 199 #endif
 200
 201 jtag_interface_t *jtag_interfaces[] = {
 202 #if BUILD_ECOSBOARD == 1
 203         &eCosBoard_interface,
 204 #endif
 205 #if BUILD_PARPORT == 1
 206         &parport_interface,
 207 #endif
 208 #if BUILD_DUMMY == 1
 209         &dummy_interface,
 210 #endif
 211 #if BUILD_FT2232_FTD2XX == 1
 212         &ft2232_interface,
 213 #endif
 214 #if BUILD_FT2232_LIBFTDI == 1
 215         &ft2232_interface,
 216 #endif
 217 #if BUILD_AMTJTAGACCEL == 1
 218         &amt_jtagaccel_interface,
 219 #endif
 220 #if BUILD_EP93XX == 1
 221         &ep93xx_interface,
 222 #endif
 223 #if BUILD_AT91RM9200 == 1
 224         &at91rm9200_interface,
 225 #endif
 226 #if BUILD_GW16012 == 1
 227         &gw16012_interface,
 228 #endif
 229 #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
 230         &presto_interface,
 231 #endif
 232 #if BUILD_USBPROG == 1
 233         &usbprog_interface,
 234 #endif
 235 #if BUILD_JLINK == 1
 236         &jlink_interface,
 237 #endif
 238         NULL,
 239 };
 240
 241 jtag_interface_t *jtag = NULL;
 242
 243 /* configuration */
 244 jtag_interface_t *jtag_interface = NULL;
 245 int jtag_speed = 0;
 246
 247
 248
 249 /* forward declarations */
 250 void jtag_add_pathmove(int num_states, enum tap_state *path);
 251 void jtag_add_runtest(int num_cycles, enum tap_state endstate);
 252 void jtag_add_end_state(enum tap_state endstate);
 253 void jtag_add_sleep(u32 us);
 254 int jtag_execute_queue(void);
 255 int jtag_cancel_queue(void);
 256
 257 /* jtag commands */
 258 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 259 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 260 int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 261 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 262 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 263 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 264 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 265
 266 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 267
 268 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 269 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 270 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 271 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 272 int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
 273
 274 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 275
 276 int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
 277 {
 278         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 279
 280         if (callback == NULL)
 281         {
 282                 return ERROR_INVALID_ARGUMENTS;
 283         }
 284
 285         if (*callbacks_p)
 286         {
 287                 while ((*callbacks_p)->next)
 288                         callbacks_p = &((*callbacks_p)->next);
 289                 callbacks_p = &((*callbacks_p)->next);
 290         }
 291
 292         (*callbacks_p) = malloc(sizeof(jtag_event_callback_t));
 293         (*callbacks_p)->callback = callback;
 294         (*callbacks_p)->priv = priv;
 295         (*callbacks_p)->next = NULL;
 296
 297         return ERROR_OK;
 298 }
 299
 300 int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv))
 301 {
 302         jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
 303
 304         if (callback == NULL)
 305         {
 306                 return ERROR_INVALID_ARGUMENTS;
 307         }
 308
 309         while (*callbacks_p)
 310         {
 311                 jtag_event_callback_t **next = &((*callbacks_p)->next);
 312                 if ((*callbacks_p)->callback == callback)
 313                 {
 314                         free(*callbacks_p);
 315                         *callbacks_p = *next;
 316                 }
 317                 callbacks_p = next;
 318         }
 319
 320         return ERROR_OK;
 321 }
 322
 323 int jtag_call_event_callbacks(enum jtag_event event)
 324 {
 325         jtag_event_callback_t *callback = jtag_event_callbacks;
 326
 327         LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
 328
 329         while (callback)
 330         {
 331                 callback->callback(event, callback->priv);
 332                 callback = callback->next;
 333         }
 334
 335         return ERROR_OK;
 336 }
 337
 338 /* returns a pointer to the pointer of the last command in queue
 339  * this may be a pointer to the root pointer (jtag_command_queue)
 340  * or to the next member of the last but one command
 341  */
 342 jtag_command_t** jtag_get_last_command_p(void)
 343 {
 344 /*      jtag_command_t *cmd = jtag_command_queue;
 345
 346         if (cmd)
 347                 while (cmd->next)
 348                         cmd = cmd->next;
 349         else
 350                 return &jtag_command_queue;
 351
 352         return &cmd->next;*/
 353
 354         return last_comand_pointer;
 355 }
 356
 357 /* returns a pointer to the n-th device in the scan chain */
 358 jtag_device_t* jtag_get_device(int num)
 359 {
 360         jtag_device_t *device = jtag_devices;
 361         int i = 0;
 362
 363         while (device)
 364         {
 365                 if (num == i)
 366                         return device;
 367                 device = device->next;
 368                 i++;
 369         }
 370
 371         LOG_ERROR("jtag device number %d not defined", num);
 372         exit(-1);
 373 }
 374
 375 void* cmd_queue_alloc(size_t size)
 376 {
 377         cmd_queue_page_t **p_page = &cmd_queue_pages;
 378         int offset;
 379         u8 *t;
 380
 381         if (*p_page)
 382         {
 383                 while ((*p_page)->next)
 384                         p_page = &((*p_page)->next);
 385                 if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
 386                         p_page = &((*p_page)->next);
 387         }
 388
 389         if (!*p_page)
 390         {
 391                 *p_page = malloc(sizeof(cmd_queue_page_t));
 392                 (*p_page)->used = 0;
 393                 (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
 394                 (*p_page)->next = NULL;
 395         }
 396
 397         offset = (*p_page)->used;
 398         (*p_page)->used += size;
 399
 400         t=(u8 *)((*p_page)->address);
 401         return t + offset;
 402 }
 403
 404 void cmd_queue_free()
 405 {
 406         cmd_queue_page_t *page = cmd_queue_pages;
 407
 408         while (page)
 409         {
 410                 cmd_queue_page_t *last = page;
 411                 free(page->address);
 412                 page = page->next;
 413                 free(last);
 414         }
 415
 416         cmd_queue_pages = NULL;
 417 }
 418
 419 static void jtag_prelude1()
 420 {
 421         if (jtag_trst == 1)
 422         {
 423                 LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)");
 424                 jtag_error=ERROR_JTAG_TRST_ASSERTED;
 425                 return;
 426         }
 427
 428         if (cmd_queue_end_state == TAP_TLR)
 429                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
 430 }
 431
 432 static void jtag_prelude(enum tap_state state)
 433 {
 434         jtag_prelude1();
 435
 436         if (state != -1)
 437                 jtag_add_end_state(state);
 438
 439         cmd_queue_cur_state = cmd_queue_end_state;
 440 }
 441
 442 void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 443 {
 444         int retval;
 445
 446         jtag_prelude(state);
 447
 448         retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
 449         if (retval!=ERROR_OK)
 450                 jtag_error=retval;
 451 }
 452
 453 int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 454 {
 455         jtag_command_t **last_cmd;
 456         jtag_device_t *device;
 457         int i, j;
 458         int scan_size = 0;
 459
 460
 461         last_cmd = jtag_get_last_command_p();
 462
 463         /* allocate memory for a new list member */
 464         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 465         (*last_cmd)->next = NULL;
 466         last_comand_pointer = &((*last_cmd)->next);
 467         (*last_cmd)->type = JTAG_SCAN;
 468
 469         /* allocate memory for ir scan command */
 470         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 471         (*last_cmd)->cmd.scan->ir_scan = 1;
 472         (*last_cmd)->cmd.scan->num_fields = jtag_num_devices;   /* one field per device */
 473         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
 474         (*last_cmd)->cmd.scan->end_state = state;
 475
 476         for (i = 0; i < jtag_num_devices; i++)
 477         {
 478                 int found = 0;
 479                 device = jtag_get_device(i);
 480                 scan_size = device->ir_length;
 481                 (*last_cmd)->cmd.scan->fields[i].device = i;
 482                 (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
 483                 (*last_cmd)->cmd.scan->fields[i].in_value = NULL;
 484                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;     /* disable verification by default */
 485
 486                 /* search the list */
 487                 for (j = 0; j < num_fields; j++)
 488                 {
 489                         if (i == fields[j].device)
 490                         {
 491                                 found = 1;
 492                                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 493                                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 494
 495                                 if (jtag_verify_capture_ir)
 496                                 {
 497                                         if (fields[j].in_handler==NULL)
 498                                         {
 499                                                 jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
 500                                         } else
 501                                         {
 502                                                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
 503                                                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
 504                                                 (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
 505                                                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
 506                                         }
 507                                 }
 508
 509                                 device->bypass = 0;
 510                                 break;
 511                         }
 512                 }
 513
 514                 if (!found)
 515                 {
 516                         /* if a device isn't listed, set it to BYPASS */
 517                         (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 518                         (*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
 519                         device->bypass = 1;
 520
 521                 }
 522
 523                 /* update device information */
 524                 buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
 525         }
 526
 527         return ERROR_OK;
 528 }
 529
 530 void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 531 {
 532         int retval;
 533
 534         jtag_prelude(state);
 535
 536         retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
 537         if (retval!=ERROR_OK)
 538                 jtag_error=retval;
 539 }
 540
 541 int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 542 {
 543         int i;
 544         jtag_command_t **last_cmd;
 545
 546         last_cmd = jtag_get_last_command_p();
 547
 548         /* allocate memory for a new list member */
 549         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 550         (*last_cmd)->next = NULL;
 551         last_comand_pointer = &((*last_cmd)->next);
 552         (*last_cmd)->type = JTAG_SCAN;
 553
 554         /* allocate memory for ir scan command */
 555         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 556         (*last_cmd)->cmd.scan->ir_scan = 1;
 557         (*last_cmd)->cmd.scan->num_fields = num_fields;
 558         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 559         (*last_cmd)->cmd.scan->end_state = state;
 560
 561         for (i = 0; i < num_fields; i++)
 562         {
 563                 int num_bits = fields[i].num_bits;
 564                 int num_bytes = CEIL(fields[i].num_bits, 8);
 565                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 566                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 567                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 568                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 569                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 570                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 571                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 572                 (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
 573                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
 574         }
 575         return ERROR_OK;
 576 }
 577
 578 void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 579 {
 580         int retval;
 581
 582         jtag_prelude(state);
 583
 584         retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
 585         if (retval!=ERROR_OK)
 586                 jtag_error=retval;
 587 }
 588
 589 int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 590 {
 591         int i, j;
 592         int bypass_devices = 0;
 593         int field_count = 0;
 594         int scan_size;
 595
 596         jtag_command_t **last_cmd = jtag_get_last_command_p();
 597         jtag_device_t *device = jtag_devices;
 598
 599         /* count devices in bypass */
 600         while (device)
 601         {
 602                 if (device->bypass)
 603                         bypass_devices++;
 604                 device = device->next;
 605         }
 606         if (bypass_devices >= jtag_num_devices)
 607         {
 608                 LOG_ERROR("all devices in bypass");
 609                 return ERROR_JTAG_DEVICE_ERROR;
 610         }
 611
 612         /* allocate memory for a new list member */
 613         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 614         last_comand_pointer = &((*last_cmd)->next);
 615         (*last_cmd)->next = NULL;
 616         (*last_cmd)->type = JTAG_SCAN;
 617
 618         /* allocate memory for dr scan command */
 619         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 620         (*last_cmd)->cmd.scan->ir_scan = 0;
 621         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 622         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 623         (*last_cmd)->cmd.scan->end_state = state;
 624
 625         for (i = 0; i < jtag_num_devices; i++)
 626         {
 627                 int found = 0;
 628                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 629
 630                 for (j = 0; j < num_fields; j++)
 631                 {
 632                         if (i == fields[j].device)
 633                         {
 634                                 found = 1;
 635                                 scan_size = fields[j].num_bits;
 636                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 637                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 638                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 639                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
 640                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
 641                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
 642                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
 643                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
 644                         }
 645                 }
 646                 if (!found)
 647                 {
 648 #ifdef _DEBUG_JTAG_IO_
 649                         /* if a device isn't listed, the BYPASS register should be selected */
 650                         if (!jtag_get_device(i)->bypass)
 651                         {
 652                                 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
 653                                 exit(-1);
 654                         }
 655 #endif
 656                         /* program the scan field to 1 bit length, and ignore it's value */
 657                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 658                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 659                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 660                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 661                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 662                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 663                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 664                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 665                 }
 666                 else
 667                 {
 668 #ifdef _DEBUG_JTAG_IO_
 669                         /* if a device is listed, the BYPASS register must not be selected */
 670                         if (jtag_get_device(i)->bypass)
 671                         {
 672                                 LOG_ERROR("BUG: scan data for a device in BYPASS");
 673                                 exit(-1);
 674                         }
 675 #endif
 676                 }
 677         }
 678         return ERROR_OK;
 679 }
 680
 681 void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
 682                 int num_fields,
 683                 const int *num_bits,
 684                 const u32 *value,
 685                 enum tap_state end_state)
 686 {
 687         int i;
 688         int field_count = 0;
 689         int scan_size;
 690         int bypass_devices = 0;
 691
 692         jtag_command_t **last_cmd = jtag_get_last_command_p();
 693         jtag_device_t *device = jtag_devices;
 694         /* count devices in bypass */
 695         while (device)
 696         {
 697                 if (device->bypass)
 698                         bypass_devices++;
 699                 device = device->next;
 700         }
 701
 702         /* allocate memory for a new list member */
 703         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 704         last_comand_pointer = &((*last_cmd)->next);
 705         (*last_cmd)->next = NULL;
 706         (*last_cmd)->type = JTAG_SCAN;
 707
 708         /* allocate memory for dr scan command */
 709         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 710         (*last_cmd)->cmd.scan->ir_scan = 0;
 711         (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
 712         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
 713         (*last_cmd)->cmd.scan->end_state = end_state;
 714
 715         for (i = 0; i < jtag_num_devices; i++)
 716         {
 717                 (*last_cmd)->cmd.scan->fields[field_count].device = i;
 718
 719                 if (i == device_num)
 720                 {
 721                         int j;
 722 #ifdef _DEBUG_JTAG_IO_
 723                         /* if a device is listed, the BYPASS register must not be selected */
 724                         if (jtag_get_device(i)->bypass)
 725                         {
 726                                 LOG_ERROR("BUG: scan data for a device in BYPASS");
 727                                 exit(-1);
 728                         }
 729 #endif
 730                         for (j = 0; j < num_fields; j++)
 731                         {
 732                                 u8 out_value[4];
 733                                 scan_size = num_bits[j];
 734                                 buf_set_u32(out_value, 0, scan_size, value[j]);
 735                                 (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
 736                                 (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
 737                                 (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 738                                 (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 739                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 740                                 (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 741                                 (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 742                                 (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 743                         }
 744                 } else
 745                 {
 746 #ifdef _DEBUG_JTAG_IO_
 747                         /* if a device isn't listed, the BYPASS register should be selected */
 748                         if (!jtag_get_device(i)->bypass)
 749                         {
 750                                 LOG_ERROR("BUG: no scan data for a device not in BYPASS");
 751                                 exit(-1);
 752                         }
 753 #endif
 754                         /* program the scan field to 1 bit length, and ignore it's value */
 755                         (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
 756                         (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
 757                         (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
 758                         (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
 759                         (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
 760                         (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
 761                         (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
 762                         (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
 763                 }
 764         }
 765 }
 766
 767 void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
 768 {
 769         int retval;
 770
 771         jtag_prelude(state);
 772
 773         retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
 774         if (retval!=ERROR_OK)
 775                 jtag_error=retval;
 776 }
 777
 778 int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
 779 {
 780         int i;
 781         jtag_command_t **last_cmd = jtag_get_last_command_p();
 782
 783         /* allocate memory for a new list member */
 784         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 785         last_comand_pointer = &((*last_cmd)->next);
 786         (*last_cmd)->next = NULL;
 787         (*last_cmd)->type = JTAG_SCAN;
 788
 789         /* allocate memory for scan command */
 790         (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
 791         (*last_cmd)->cmd.scan->ir_scan = 0;
 792         (*last_cmd)->cmd.scan->num_fields = num_fields;
 793         (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
 794         (*last_cmd)->cmd.scan->end_state = state;
 795
 796         for (i = 0; i < num_fields; i++)
 797         {
 798                 int num_bits = fields[i].num_bits;
 799                 int num_bytes = CEIL(fields[i].num_bits, 8);
 800                 (*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
 801                 (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
 802                 (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
 803                 (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
 804                 (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
 805                 (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
 806                 (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
 807                 (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
 808                 (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
 809         }
 810
 811         return ERROR_OK;
 812 }
 813
 814 void jtag_add_tlr()
 815 {
 816         jtag_prelude(TAP_TLR);
 817
 818         int retval;
 819         retval=interface_jtag_add_tlr();
 820         if (retval!=ERROR_OK)
 821                 jtag_error=retval;
 822 }
 823
 824 int MINIDRIVER(interface_jtag_add_tlr)()
 825 {
 826         enum tap_state state = TAP_TLR;
 827         jtag_command_t **last_cmd = jtag_get_last_command_p();
 828
 829         /* allocate memory for a new list member */
 830         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 831         last_comand_pointer = &((*last_cmd)->next);
 832         (*last_cmd)->next = NULL;
 833         (*last_cmd)->type = JTAG_STATEMOVE;
 834
 835         (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
 836         (*last_cmd)->cmd.statemove->end_state = state;
 837
 838
 839         return ERROR_OK;
 840 }
 841
 842 void jtag_add_pathmove(int num_states, enum tap_state *path)
 843 {
 844         enum tap_state cur_state=cmd_queue_cur_state;
 845         int i;
 846         int retval;
 847
 848         /* the last state has to be a stable state */
 849         if (tap_move_map[path[num_states - 1]] == -1)
 850         {
 851                 LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
 852                 exit(-1);
 853         }
 854
 855         for (i=0; i<num_states; i++)
 856         {
 857                 if (path[i] == TAP_TLR)
 858                 {
 859                         LOG_ERROR("BUG: TAP_TLR is not a valid state for pathmove sequences");
 860                         exit(-1);
 861                 }
 862                 if ((tap_transitions[cur_state].low != path[i])&&
 863                                 (tap_transitions[cur_state].high != path[i]))
 864                 {
 865                         LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
 866                         exit(-1);
 867                 }
 868                 cur_state = path[i];
 869         }
 870
 871         jtag_prelude1();
 872
 873
 874         retval=interface_jtag_add_pathmove(num_states, path);
 875         cmd_queue_cur_state = path[num_states - 1];
 876         if (retval!=ERROR_OK)
 877                 jtag_error=retval;
 878 }
 879
 880 int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
 881 {
 882         jtag_command_t **last_cmd = jtag_get_last_command_p();
 883         int i;
 884
 885         /* allocate memory for a new list member */
 886         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 887         last_comand_pointer = &((*last_cmd)->next);
 888         (*last_cmd)->next = NULL;
 889         (*last_cmd)->type = JTAG_PATHMOVE;
 890
 891         (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
 892         (*last_cmd)->cmd.pathmove->num_states = num_states;
 893         (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
 894
 895         for (i = 0; i < num_states; i++)
 896                 (*last_cmd)->cmd.pathmove->path[i] = path[i];
 897
 898         return ERROR_OK;
 899 }
 900
 901 int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
 902 {
 903         jtag_command_t **last_cmd = jtag_get_last_command_p();
 904
 905         /* allocate memory for a new list member */
 906         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
 907         (*last_cmd)->next = NULL;
 908         last_comand_pointer = &((*last_cmd)->next);
 909         (*last_cmd)->type = JTAG_RUNTEST;
 910
 911         (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t));
 912         (*last_cmd)->cmd.runtest->num_cycles = num_cycles;
 913         (*last_cmd)->cmd.runtest->end_state = state;
 914
 915         return ERROR_OK;
 916 }
 917
 918 void jtag_add_runtest(int num_cycles, enum tap_state state)
 919 {
 920         int retval;
 921
 922         jtag_prelude(state);
 923
 924         /* executed by sw or hw fifo */
 925         retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
 926         if (retval!=ERROR_OK)
 927                 jtag_error=retval;
 928 }
 929
 930 void jtag_add_reset(int req_tlr_or_trst, int req_srst)
 931 {
 932         int trst_with_tlr = 0;
 933         int retval;
 934
 935         /* FIX!!! there are *many* different cases here. A better
 936          * approach is needed for legal combinations of transitions...
 937          */
 938         if ((jtag_reset_config & RESET_HAS_SRST)&&
 939                         (jtag_reset_config & RESET_HAS_TRST)&&
 940                         ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0))
 941         {
 942                 if (((req_tlr_or_trst&&!jtag_trst)||
 943                                 (!req_tlr_or_trst&&jtag_trst))&&
 944                                 ((req_srst&&!jtag_srst)||
 945                                                 (!req_srst&&jtag_srst)))
 946                 {
 947                         /* FIX!!! srst_pulls_trst allows 1,1 => 0,0 transition.... */
 948                         //LOG_ERROR("BUG: transition of req_tlr_or_trst and req_srst in the same jtag_add_reset() call is undefined");
 949                 }
 950         }
 951
 952         /* Make sure that jtag_reset_config allows the requested reset */
 953         /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
 954         if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (!req_tlr_or_trst))
 955         {
 956                 LOG_ERROR("BUG: requested reset would assert trst");
 957                 jtag_error=ERROR_FAIL;
 958                 return;
 959         }
 960
 961         /* if TRST pulls SRST, we reset with TAP T-L-R */
 962         if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tlr_or_trst)) && (req_srst == 0))
 963         {
 964                 trst_with_tlr = 1;
 965         }
 966
 967         if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
 968         {
 969                 LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
 970                 jtag_error=ERROR_FAIL;
 971                 return;
 972         }
 973
 974         if (req_tlr_or_trst)
 975         {
 976                 if (!trst_with_tlr && (jtag_reset_config & RESET_HAS_TRST))
 977                 {
 978                         jtag_trst = 1;
 979                 } else
 980                 {
 981                         trst_with_tlr = 1;
 982                 }
 983         } else
 984         {
 985                 jtag_trst = 0;
 986         }
 987
 988         jtag_srst = req_srst;
 989
 990         retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
 991         if (retval!=ERROR_OK)
 992         {
 993                 jtag_error=retval;
 994                 return;
 995         }
 996
 997         if (jtag_srst)
 998         {
 999                 LOG_DEBUG("SRST line asserted");
1000         }
1001         else
1002         {
1003                 LOG_DEBUG("SRST line released");
1004                 if (jtag_nsrst_delay)
1005                         jtag_add_sleep(jtag_nsrst_delay * 1000);
1006         }
1007
1008         if (trst_with_tlr)
1009         {
1010                 LOG_DEBUG("JTAG reset with TLR instead of TRST");
1011                 jtag_add_end_state(TAP_TLR);
1012                 jtag_add_tlr();
1013                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1014                 return;
1015         }
1016
1017         if (jtag_trst)
1018         {
1019                 /* we just asserted nTRST, so we're now in Test-Logic-Reset,
1020                  * and inform possible listeners about this
1021                  */
1022                 LOG_DEBUG("TRST line asserted");
1023                 cmd_queue_cur_state = TAP_TLR;
1024                 jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
1025         }
1026         else
1027         {
1028                 if (jtag_ntrst_delay)
1029                         jtag_add_sleep(jtag_ntrst_delay * 1000);
1030         }
1031 }
1032
1033 int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
1034 {
1035         jtag_command_t **last_cmd = jtag_get_last_command_p();
1036
1037         /* allocate memory for a new list member */
1038         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1039         (*last_cmd)->next = NULL;
1040         last_comand_pointer = &((*last_cmd)->next);
1041         (*last_cmd)->type = JTAG_RESET;
1042
1043         (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
1044         (*last_cmd)->cmd.reset->trst = req_trst;
1045         (*last_cmd)->cmd.reset->srst = req_srst;
1046
1047         return ERROR_OK;
1048 }
1049
1050 void jtag_add_end_state(enum tap_state state)
1051 {
1052         cmd_queue_end_state = state;
1053         if ((cmd_queue_end_state == TAP_SD)||(cmd_queue_end_state == TAP_SI))
1054         {
1055                 LOG_ERROR("BUG: TAP_SD/SI can't be end state. Calling code should use a larger scan field");
1056         }
1057 }
1058
1059 int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
1060 {
1061         jtag_command_t **last_cmd = jtag_get_last_command_p();
1062
1063         /* allocate memory for a new list member */
1064         *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
1065         (*last_cmd)->next = NULL;
1066         last_comand_pointer = &((*last_cmd)->next);
1067         (*last_cmd)->type = JTAG_SLEEP;
1068
1069         (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t));
1070         (*last_cmd)->cmd.sleep->us = us;
1071
1072         return ERROR_OK;
1073 }
1074
1075 void jtag_add_sleep(u32 us)
1076 {
1077         keep_alive(); /* we might be running on a very slow JTAG clk */
1078         int retval=interface_jtag_add_sleep(us);
1079         if (retval!=ERROR_OK)
1080                 jtag_error=retval;
1081         return;
1082 }
1083
1084 int jtag_scan_size(scan_command_t *cmd)
1085 {
1086         int bit_count = 0;
1087         int i;
1088
1089         /* count bits in scan command */
1090         for (i = 0; i < cmd->num_fields; i++)
1091         {
1092                 bit_count += cmd->fields[i].num_bits;
1093         }
1094
1095         return bit_count;
1096 }
1097
1098 int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
1099 {
1100         int bit_count = 0;
1101         int i;
1102
1103         bit_count = jtag_scan_size(cmd);
1104         *buffer = malloc(CEIL(bit_count, 8));
1105
1106         bit_count = 0;
1107
1108         for (i = 0; i < cmd->num_fields; i++)
1109         {
1110                 if (cmd->fields[i].out_value)
1111                 {
1112 #ifdef _DEBUG_JTAG_IO_
1113                         char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
1114 #endif
1115                         buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
1116 #ifdef _DEBUG_JTAG_IO_
1117                         LOG_DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
1118                         free(char_buf);
1119 #endif
1120                 }
1121
1122                 bit_count += cmd->fields[i].num_bits;
1123         }
1124
1125         return bit_count;
1126 }
1127
1128 int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
1129 {
1130         int i;
1131         int bit_count = 0;
1132         int retval;
1133
1134         /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
1135         retval = ERROR_OK;
1136
1137         for (i = 0; i < cmd->num_fields; i++)
1138         {
1139                 /* if neither in_value nor in_handler
1140                  * are specified we don't have to examine this field
1141                  */
1142                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1143                 {
1144                         int num_bits = cmd->fields[i].num_bits;
1145                         u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
1146
1147 #ifdef _DEBUG_JTAG_IO_
1148                         char *char_buf;
1149
1150                         char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1151                         LOG_DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
1152                         free(char_buf);
1153 #endif
1154
1155                         if (cmd->fields[i].in_value)
1156                         {
1157                                 buf_cpy(captured, cmd->fields[i].in_value, num_bits);
1158
1159                                 if (cmd->fields[i].in_handler)
1160                                 {
1161                                         if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1162                                         {
1163                                                 LOG_WARNING("in_handler reported a failed check");
1164                                                 retval = ERROR_JTAG_QUEUE_FAILED;
1165                                         }
1166                                 }
1167                         }
1168
1169                         /* no in_value specified, but a handler takes care of the scanned data */
1170                         if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
1171                         {
1172                                 if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
1173                                 {
1174                                         /* We're going to call the error:handler later, but if the in_handler
1175                                          * reported an error we report this failure upstream
1176                                          */
1177                                         LOG_WARNING("in_handler reported a failed check");
1178                                         retval = ERROR_JTAG_QUEUE_FAILED;
1179                                 }
1180                         }
1181
1182                         free(captured);
1183                 }
1184                 bit_count += cmd->fields[i].num_bits;
1185         }
1186
1187         return retval;
1188 }
1189
1190 int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
1191 {
1192         int retval = ERROR_OK;
1193         int num_bits = field->num_bits;
1194
1195         int compare_failed = 0;
1196
1197         if (field->in_check_mask)
1198                 compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
1199         else
1200                 compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
1201
1202         if (compare_failed)
1203                 {
1204                 /* An error handler could have caught the failing check
1205                  * only report a problem when there wasn't a handler, or if the handler
1206                  * acknowledged the error
1207                  */
1208                 if (compare_failed)
1209                 {
1210                         char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
1211                         char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
1212
1213                         if (field->in_check_mask)
1214                         {
1215                                 char *in_check_mask_char;
1216                                 in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
1217                                 LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char, in_check_value_char, in_check_mask_char);
1218                                 free(in_check_mask_char);
1219                         }
1220                         else
1221                         {
1222                                 LOG_WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
1223                         }
1224
1225                         free(captured_char);
1226                         free(in_check_value_char);
1227
1228                         retval = ERROR_JTAG_QUEUE_FAILED;
1229                 }
1230
1231         }
1232         return retval;
1233 }
1234
1235 /*
1236   set up checking of this field using the in_handler. The values passed in must be valid until
1237   after jtag_execute() has completed.
1238  */
1239 void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
1240 {
1241         if (value)
1242                 field->in_handler = jtag_check_value;
1243         else
1244                 field->in_handler = NULL;       /* No check, e.g. embeddedice uses value==NULL to indicate no check */
1245         field->in_handler_priv = NULL;
1246         field->in_check_value = value;
1247         field->in_check_mask = mask;
1248 }
1249
1250 enum scan_type jtag_scan_type(scan_command_t *cmd)
1251 {
1252         int i;
1253         int type = 0;
1254
1255         for (i = 0; i < cmd->num_fields; i++)
1256         {
1257                 if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
1258                         type |= SCAN_IN;
1259                 if (cmd->fields[i].out_value)
1260                         type |= SCAN_OUT;
1261         }
1262
1263         return type;
1264 }
1265
1266 int MINIDRIVER(interface_jtag_execute_queue)(void)
1267 {
1268         int retval;
1269
1270         if (jtag==NULL)
1271         {
1272                 LOG_ERROR("No JTAG interface configured yet. Issue 'init' command in startup scripts before communicating with targets.");
1273                 return ERROR_FAIL;
1274         }
1275
1276         retval = jtag->execute_queue();
1277
1278         cmd_queue_free();
1279
1280         jtag_command_queue = NULL;
1281         last_comand_pointer = &jtag_command_queue;
1282
1283         return retval;
1284 }
1285
1286 int jtag_execute_queue(void)
1287 {
1288         int retval=interface_jtag_execute_queue();
1289         if (retval==ERROR_OK)
1290         {
1291                 retval=jtag_error;
1292         }
1293         jtag_error=ERROR_OK;
1294         return retval;
1295 }
1296
1297 int jtag_reset_callback(enum jtag_event event, void *priv)
1298 {
1299         jtag_device_t *device = priv;
1300
1301         LOG_DEBUG("-");
1302
1303         if (event == JTAG_TRST_ASSERTED)
1304         {
1305                 buf_set_ones(device->cur_instr, device->ir_length);
1306                 device->bypass = 1;
1307         }
1308
1309         return ERROR_OK;
1310 }
1311
1312 void jtag_sleep(u32 us)
1313 {
1314         usleep(us);
1315 }
1316
1317 /* Try to examine chain layout according to IEEE 1149.1 §12
1318  */
1319 int jtag_examine_chain()
1320 {
1321         jtag_device_t *device = jtag_devices;
1322         scan_field_t field;
1323         u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
1324         int i;
1325         int bit_count;
1326         int device_count = 0;
1327         u8 zero_check = 0x0;
1328         u8 one_check = 0xff;
1329
1330         field.device = 0;
1331         field.num_bits = sizeof(idcode_buffer) * 8;
1332         field.out_value = idcode_buffer;
1333         field.out_mask = NULL;
1334         field.in_value = idcode_buffer;
1335         field.in_check_value = NULL;
1336         field.in_check_mask = NULL;
1337         field.in_handler = NULL;
1338         field.in_handler_priv = NULL;
1339
1340         for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
1341         {
1342                 buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
1343         }
1344
1345         jtag_add_plain_dr_scan(1, &field, TAP_TLR);
1346         jtag_execute_queue();
1347
1348         for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
1349         {
1350                 zero_check |= idcode_buffer[i];
1351                 one_check &= idcode_buffer[i];
1352         }
1353
1354         /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
1355         if ((zero_check == 0x00) || (one_check == 0xff))
1356         {
1357                 LOG_ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
1358                 return ERROR_JTAG_INIT_FAILED;
1359         }
1360
1361         for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
1362         {
1363                 u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1364                 if ((idcode & 1) == 0)
1365                 {
1366                         /* LSB must not be 0, this indicates a device in bypass */
1367                         device_count++;
1368
1369                         LOG_WARNING("Device was in bypass after TRST/TMS reset");
1370
1371                         bit_count += 1;
1372                 }
1373                 else
1374                 {
1375                         u32 manufacturer;
1376                         u32 part;
1377                         u32 version;
1378
1379                         if (idcode == 0x000000FF)
1380                         {
1381                                 int unexpected=0;
1382                                 /* End of chain (invalid manufacturer ID)
1383                                  *
1384                                  * The JTAG examine is the very first thing that happens
1385                                  *
1386                                  * A single JTAG device requires only 64 bits to be read back correctly.
1387                                  *
1388                                  * The code below adds a check that the rest of the data scanned (640 bits)
1389                                  * are all as expected. This helps diagnose/catch problems with the JTAG chain
1390                                  *
1391                                  * earlier and gives more helpful/explicit error messages.
1392                                  */
1393                                 for (bit_count += 32; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;bit_count += 32)
1394                                 {
1395                                         idcode = buf_get_u32(idcode_buffer, bit_count, 32);
1396                                         if (unexpected||(idcode != 0x000000FF))
1397                                         {
1398                                                 LOG_WARNING("Unexpected idcode after end of chain! %d 0x%08x", bit_count, idcode);
1399                                                 unexpected = 1;
1400                                         }
1401                                 }
1402
1403                                 break;
1404                         }
1405
1406                         if (device)
1407                         {
1408                                 device->idcode = idcode;
1409                                 device = device->next;
1410                         }
1411                         device_count++;
1412
1413                         manufacturer = (idcode & 0xffe) >> 1;
1414                         part = (idcode & 0xffff000) >> 12;
1415                         version = (idcode & 0xf0000000) >> 28;
1416
1417                         LOG_INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
1418                                 idcode, manufacturer, part, version);
1419
1420                         bit_count += 32;
1421                 }
1422         }
1423
1424         /* see if number of discovered devices matches configuration */
1425         if (device_count != jtag_num_devices)
1426         {
1427                 LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
1428                                 device_count, jtag_num_devices);
1429                 LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
1430                 return ERROR_JTAG_INIT_FAILED;
1431         }
1432
1433         return ERROR_OK;
1434 }
1435
1436 int jtag_validate_chain()
1437 {
1438         jtag_device_t *device = jtag_devices;
1439         int total_ir_length = 0;
1440         u8 *ir_test = NULL;
1441         scan_field_t field;
1442         int chain_pos = 0;
1443
1444         while (device)
1445         {
1446                 total_ir_length += device->ir_length;
1447                 device = device->next;
1448         }
1449
1450         total_ir_length += 2;
1451         ir_test = malloc(CEIL(total_ir_length, 8));
1452         buf_set_ones(ir_test, total_ir_length);
1453
1454         field.device = 0;
1455         field.num_bits = total_ir_length;
1456         field.out_value = ir_test;
1457         field.out_mask = NULL;
1458         field.in_value = ir_test;
1459         field.in_check_value = NULL;
1460         field.in_check_mask = NULL;
1461         field.in_handler = NULL;
1462         field.in_handler_priv = NULL;
1463
1464         jtag_add_plain_ir_scan(1, &field, TAP_TLR);
1465         jtag_execute_queue();
1466
1467         device = jtag_devices;
1468         while (device)
1469         {
1470                 if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
1471                 {
1472                         char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1473                         LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1474                         free(cbuf);
1475                         free(ir_test);
1476                         return ERROR_JTAG_INIT_FAILED;
1477                 }
1478                 chain_pos += device->ir_length;
1479                 device = device->next;
1480         }
1481
1482         if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
1483         {
1484                 char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
1485                 LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
1486                 free(cbuf);
1487                 free(ir_test);
1488                 return ERROR_JTAG_INIT_FAILED;
1489         }
1490
1491         free(ir_test);
1492
1493         return ERROR_OK;
1494 }
1495
1496 int jtag_register_commands(struct command_context_s *cmd_ctx)
1497 {
1498         register_command(cmd_ctx, NULL, "interface", handle_interface_command,
1499                 COMMAND_CONFIG, NULL);
1500         register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
1501                 COMMAND_ANY, "set jtag speed (if supported)");
1502         register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
1503                 COMMAND_ANY, "same as jtag_speed, except it takes maximum khz as arguments. 0 KHz = RTCK.");
1504         register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
1505                 COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
1506         register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
1507                 COMMAND_CONFIG, NULL);
1508         register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
1509                 COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
1510         register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
1511                 COMMAND_ANY, "jtag_ntrst_delay <ms> - delay after deasserting trst in ms");
1512
1513         register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command,
1514                 COMMAND_EXEC, "print current scan chain configuration");
1515
1516         register_command(cmd_ctx, NULL, "endstate", handle_endstate_command,
1517                 COMMAND_EXEC, "finish JTAG operations in <tap_state>");
1518         register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
1519                 COMMAND_EXEC, "toggle reset lines <trst> <srst>");
1520         register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
1521                 COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
1522         register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
1523                 COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2] ...");
1524         register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan <device> <num_bits> <value> <num_bits1> <value2> ...");
1525
1526         register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
1527                 COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
1528         return ERROR_OK;
1529 }
1530
1531 int jtag_interface_init(struct command_context_s *cmd_ctx)
1532 {
1533         if (jtag)
1534                 return ERROR_OK;
1535
1536         if (!jtag_interface)
1537         {
1538                 /* nothing was previously specified by "interface" command */
1539                 LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
1540                 return ERROR_JTAG_INVALID_INTERFACE;
1541         }
1542         if(hasKHz)
1543         {
1544                 jtag_interface->khz(speed_khz, &jtag_speed);
1545                 hasKHz = 0;
1546         }
1547
1548         if (jtag_interface->init() != ERROR_OK)
1549                 return ERROR_JTAG_INIT_FAILED;
1550
1551
1552
1553         jtag = jtag_interface;
1554         return ERROR_OK;
1555 }
1556
1557 static int jtag_init_inner(struct command_context_s *cmd_ctx)
1558 {
1559         int validate_tries = 0;
1560         jtag_device_t *device;
1561         int retval;
1562
1563         LOG_DEBUG("Init JTAG chain");
1564
1565         device = jtag_devices;
1566         jtag_ir_scan_size = 0;
1567         jtag_num_devices = 0;
1568         while (device != NULL)
1569         {
1570                 jtag_ir_scan_size += device->ir_length;
1571                 jtag_num_devices++;
1572                 device = device->next;
1573         }
1574
1575         jtag_add_tlr();
1576         if ((retval=jtag_execute_queue())!=ERROR_OK)
1577                 return retval;
1578
1579         /* examine chain first, as this could discover the real chain layout */
1580         if (jtag_examine_chain() != ERROR_OK)
1581         {
1582                 LOG_ERROR("trying to validate configured JTAG chain anyway...");
1583         }
1584
1585         while (jtag_validate_chain() != ERROR_OK)
1586         {
1587                 validate_tries++;
1588
1589                 if (validate_tries > 5)
1590                 {
1591                         LOG_ERROR("Could not validate JTAG chain, exit");
1592                         return ERROR_JTAG_INVALID_INTERFACE;
1593                 }
1594                 usleep(10000);
1595         }
1596
1597         return ERROR_OK;
1598 }
1599
1600 int jtag_init_reset(struct command_context_s *cmd_ctx)
1601 {
1602         int retval;
1603
1604         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1605                 return retval;
1606
1607         LOG_DEBUG("Trying to bring the JTAG controller to life by asserting TRST / TLR");
1608
1609         /* Reset can happen after a power cycle.
1610          *
1611          * Ideally we would only assert TRST or run TLR before the target reset.
1612          *
1613          * However w/srst_pulls_trst, trst is asserted together with the target
1614          * reset whether we want it or not.
1615          *
1616          * NB! Some targets have JTAG circuitry disabled until a
1617          * trst & srst has been asserted.
1618          *
1619          * NB! here we assume nsrst/ntrst delay are sufficient!
1620          *
1621          * NB! order matters!!!! srst *can* disconnect JTAG circuitry
1622          *
1623          */
1624         jtag_add_reset(1, 0); /* TLR or TRST */
1625         if (jtag_reset_config & RESET_HAS_SRST)
1626         {
1627                 jtag_add_reset(1, 1);
1628                 if ((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)
1629                         jtag_add_reset(0, 1);
1630         }
1631         jtag_add_reset(0, 0);
1632         if ((retval = jtag_execute_queue()) != ERROR_OK)
1633                 return retval;
1634
1635         /* Check that we can communication on the JTAG chain + eventually we want to
1636          * be able to perform enumeration only after OpenOCD has started
1637          * telnet and GDB server
1638          *
1639          * That would allow users to more easily perform any magic they need to before
1640          * reset happens.
1641          */
1642         return jtag_init_inner(cmd_ctx);
1643 }
1644
1645 int jtag_init(struct command_context_s *cmd_ctx)
1646 {
1647         int retval;
1648         if ((retval=jtag_interface_init(cmd_ctx)) != ERROR_OK)
1649                 return retval;
1650         if (jtag_init_inner(cmd_ctx)==ERROR_OK)
1651         {
1652                 return ERROR_OK;
1653         }
1654         return jtag_init_reset(cmd_ctx);
1655 }
1656
1657 static int default_khz(int khz, int *jtag_speed)
1658 {
1659         LOG_ERROR("Translation from khz to jtag_speed not implemented");
1660         return ERROR_FAIL;
1661 }
1662
1663 static int default_speed_div(int speed, int *khz)
1664 {
1665         return ERROR_FAIL;
1666 }
1667
1668 int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1669 {
1670         int i;
1671
1672         /* check whether the interface is already configured */
1673         if (jtag_interface)
1674         {
1675                 LOG_WARNING("Interface already configured, ignoring");
1676                 return ERROR_OK;
1677         }
1678
1679         /* interface name is a mandatory argument */
1680         if (argc < 1 || args[0][0] == '\0')
1681         {
1682                 return ERROR_COMMAND_SYNTAX_ERROR;
1683         }
1684
1685         for (i=0; jtag_interfaces[i]; i++)
1686         {
1687                 if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
1688                 {
1689                         if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
1690                                 exit(-1);
1691
1692                         jtag_interface = jtag_interfaces[i];
1693
1694                         if (jtag_interface->khz == NULL)
1695                         {
1696                                 jtag_interface->khz = default_khz;
1697                         }
1698                         if (jtag_interface->speed_div == NULL)
1699                         {
1700                                 jtag_interface->speed_div = default_speed_div;
1701                         }
1702                         return ERROR_OK;
1703                 }
1704         }
1705
1706         /* no valid interface was found (i.e. the configuration option,
1707          * didn't match one of the compiled-in interfaces
1708          */
1709         LOG_ERROR("No valid jtag interface found (%s)", args[0]);
1710         LOG_ERROR("compiled-in jtag interfaces:");
1711         for (i = 0; jtag_interfaces[i]; i++)
1712         {
1713                 LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
1714         }
1715
1716         return ERROR_JTAG_INVALID_INTERFACE;
1717 }
1718
1719 int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1720 {
1721         jtag_device_t **last_device_p = &jtag_devices;
1722
1723         if (*last_device_p)
1724         {
1725                 while ((*last_device_p)->next)
1726                         last_device_p = &((*last_device_p)->next);
1727                 last_device_p = &((*last_device_p)->next);
1728         }
1729
1730         if (argc < 3)
1731                 return ERROR_OK;
1732
1733         *last_device_p = malloc(sizeof(jtag_device_t));
1734         (*last_device_p)->ir_length = strtoul(args[0], NULL, 0);
1735
1736         (*last_device_p)->expected = malloc((*last_device_p)->ir_length);
1737         buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0));
1738         (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length);
1739         buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0));
1740
1741         (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length);
1742         (*last_device_p)->bypass = 1;
1743         buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length);
1744
1745         (*last_device_p)->next = NULL;
1746
1747         jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
1748
1749         jtag_num_devices++;
1750
1751         return ERROR_OK;
1752 }
1753
1754 int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1755 {
1756         jtag_device_t *device = jtag_devices;
1757         int device_count = 0;
1758
1759         while (device)
1760         {
1761                 u32 expected, expected_mask, cur_instr;
1762                 expected = buf_get_u32(device->expected, 0, device->ir_length);
1763                 expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length);
1764                 cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length);
1765                 command_print(cmd_ctx, "%i: idcode: 0x%8.8x ir length %i, ir capture 0x%x, ir mask 0x%x, current instruction 0x%x", device_count, device->idcode, device->ir_length, expected, expected_mask, cur_instr);
1766                 device = device->next;
1767                 device_count++;
1768         }
1769
1770         return ERROR_OK;
1771 }
1772
1773 int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1774 {
1775         if (argc < 1)
1776                 return ERROR_COMMAND_SYNTAX_ERROR;
1777
1778         if (argc >= 1)
1779         {
1780                 if (strcmp(args[0], "none") == 0)
1781                         jtag_reset_config = RESET_NONE;
1782                 else if (strcmp(args[0], "trst_only") == 0)
1783                         jtag_reset_config = RESET_HAS_TRST;
1784                 else if (strcmp(args[0], "srst_only") == 0)
1785                         jtag_reset_config = RESET_HAS_SRST;
1786                 else if (strcmp(args[0], "trst_and_srst") == 0)
1787                         jtag_reset_config = RESET_TRST_AND_SRST;
1788                 else
1789                 {
1790                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1791                         jtag_reset_config = RESET_NONE;
1792                         return ERROR_INVALID_ARGUMENTS;
1793                 }
1794         }
1795
1796         if (argc >= 2)
1797         {
1798                 if (strcmp(args[1], "separate") == 0)
1799                 {
1800                         /* seperate reset lines - default */
1801                 } else
1802                 {
1803                         if (strcmp(args[1], "srst_pulls_trst") == 0)
1804                                 jtag_reset_config |= RESET_SRST_PULLS_TRST;
1805                         else if (strcmp(args[1], "trst_pulls_srst") == 0)
1806                                 jtag_reset_config |= RESET_TRST_PULLS_SRST;
1807                         else if (strcmp(args[1], "combined") == 0)
1808                                 jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST;
1809                         else
1810                         {
1811                                 LOG_ERROR("invalid reset_config argument, defaulting to none");
1812                                 jtag_reset_config = RESET_NONE;
1813                                 return ERROR_INVALID_ARGUMENTS;
1814                         }
1815                 }
1816         }
1817
1818         if (argc >= 3)
1819         {
1820                 if (strcmp(args[2], "trst_open_drain") == 0)
1821                         jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
1822                 else if (strcmp(args[2], "trst_push_pull") == 0)
1823                         jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
1824                 else
1825                 {
1826                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1827                         jtag_reset_config = RESET_NONE;
1828                         return ERROR_INVALID_ARGUMENTS;
1829                 }
1830         }
1831
1832         if (argc >= 4)
1833         {
1834                 if (strcmp(args[3], "srst_push_pull") == 0)
1835                         jtag_reset_config |= RESET_SRST_PUSH_PULL;
1836                 else if (strcmp(args[3], "srst_open_drain") == 0)
1837                         jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
1838                 else
1839                 {
1840                         LOG_ERROR("invalid reset_config argument, defaulting to none");
1841                         jtag_reset_config = RESET_NONE;
1842                         return ERROR_INVALID_ARGUMENTS;
1843                 }
1844         }
1845
1846         return ERROR_OK;
1847 }
1848
1849 int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1850 {
1851         if (argc < 1)
1852         {
1853                 LOG_ERROR("jtag_nsrst_delay <ms> command takes one required argument");
1854                 exit(-1);
1855         }
1856         else
1857         {
1858                 jtag_nsrst_delay = strtoul(args[0], NULL, 0);
1859         }
1860
1861         return ERROR_OK;
1862 }
1863
1864 int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1865 {
1866         if (argc < 1)
1867         {
1868                 LOG_ERROR("jtag_ntrst_delay <ms> command takes one required argument");
1869                 exit(-1);
1870         }
1871         else
1872         {
1873                 jtag_ntrst_delay = strtoul(args[0], NULL, 0);
1874         }
1875
1876         return ERROR_OK;
1877 }
1878
1879 int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1880 {
1881         int retval=ERROR_OK;
1882
1883         if (argc == 1)
1884         {
1885                 LOG_DEBUG("handle jtag speed");
1886
1887                 int cur_speed = 0;
1888                 cur_speed = jtag_speed = strtoul(args[0], NULL, 0);
1889
1890                 /* this command can be called during CONFIG,
1891                  * in which case jtag isn't initialized */
1892                 if (jtag)
1893                 {
1894                         retval=jtag->speed(cur_speed);
1895                 }
1896         } else if (argc == 0)
1897         {
1898         } else
1899         {
1900                 retval=ERROR_COMMAND_SYNTAX_ERROR;
1901         }
1902         command_print(cmd_ctx, "jtag_speed: %d", jtag_speed);
1903
1904         return retval;
1905 }
1906
1907 int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1908 {
1909         int retval=ERROR_OK;
1910         LOG_DEBUG("handle jtag khz");
1911
1912         if(argc == 1)
1913         {
1914                 speed_khz = strtoul(args[0], NULL, 0);
1915                 if (jtag != NULL)
1916                 {
1917                         int cur_speed = 0;
1918                         LOG_DEBUG("have interface set up");
1919                         int speed_div1;
1920                         if ((retval=jtag->khz(speed_khz, &speed_div1))!=ERROR_OK)
1921                         {
1922                                 speed_khz = 0;
1923                                 return retval;
1924                         }
1925
1926                         cur_speed = jtag_speed = speed_div1;
1927
1928                         retval=jtag->speed(cur_speed);
1929                 } else
1930                 {
1931                         hasKHz = 1;
1932                 }
1933         } else if (argc==0)
1934         {
1935         } else
1936         {
1937                 retval=ERROR_COMMAND_SYNTAX_ERROR;
1938         }
1939         command_print(cmd_ctx, "jtag_khz: %d", speed_khz);
1940         return retval;
1941
1942 }
1943
1944 int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1945 {
1946         enum tap_state state;
1947
1948         if (argc < 1)
1949         {
1950                 return ERROR_COMMAND_SYNTAX_ERROR;
1951         }
1952         else
1953         {
1954                 for (state = 0; state < 16; state++)
1955                 {
1956                         if (strcmp(args[0], tap_state_strings[state]) == 0)
1957                         {
1958                                 jtag_add_end_state(state);
1959                                 jtag_execute_queue();
1960                         }
1961                 }
1962         }
1963         command_print(cmd_ctx, "current endstate: %s", tap_state_strings[cmd_queue_end_state]);
1964
1965         return ERROR_OK;
1966 }
1967
1968 int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1969 {
1970         int trst = -1;
1971         int srst = -1;
1972
1973         if (argc < 2)
1974         {
1975                 return ERROR_COMMAND_SYNTAX_ERROR;
1976         }
1977
1978         if (args[0][0] == '1')
1979                 trst = 1;
1980         else if (args[0][0] == '0')
1981                 trst = 0;
1982         else
1983         {
1984                 return ERROR_COMMAND_SYNTAX_ERROR;
1985         }
1986
1987         if (args[1][0] == '1')
1988                 srst = 1;
1989         else if (args[1][0] == '0')
1990                 srst = 0;
1991         else
1992         {
1993                 return ERROR_COMMAND_SYNTAX_ERROR;
1994         }
1995
1996         if (jtag_interface_init(cmd_ctx) != ERROR_OK)
1997                 return ERROR_JTAG_INIT_FAILED;
1998
1999         jtag_add_reset(trst, srst);
2000         jtag_execute_queue();
2001
2002         return ERROR_OK;
2003 }
2004
2005 int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2006 {
2007         if (argc < 1)
2008         {
2009                 return ERROR_COMMAND_SYNTAX_ERROR;
2010         }
2011
2012         jtag_add_runtest(strtol(args[0], NULL, 0), -1);
2013         jtag_execute_queue();
2014
2015         return ERROR_OK;
2016
2017 }
2018
2019 int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2020 {
2021         int i;
2022         scan_field_t *fields;
2023
2024         if ((argc < 2) || (argc % 2))
2025         {
2026                 return ERROR_COMMAND_SYNTAX_ERROR;
2027         }
2028
2029         fields = malloc(sizeof(scan_field_t) * argc / 2);
2030
2031         for (i = 0; i < argc / 2; i++)
2032         {
2033                 int device = strtoul(args[i*2], NULL, 0);
2034                 int field_size = jtag_get_device(device)->ir_length;
2035                 fields[i].device = device;
2036                 fields[i].out_value = malloc(CEIL(field_size, 8));
2037                 buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0));
2038                 fields[i].out_mask = NULL;
2039                 fields[i].in_value = NULL;
2040                 fields[i].in_check_mask = NULL;
2041                 fields[i].in_handler = NULL;
2042                 fields[i].in_handler_priv = NULL;
2043         }
2044
2045         jtag_add_ir_scan(argc / 2, fields, -1);
2046         jtag_execute_queue();
2047
2048         for (i = 0; i < argc / 2; i++)
2049                 free(fields[i].out_value);
2050
2051         free (fields);
2052
2053         return ERROR_OK;
2054 }
2055
2056 int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj *const *args)
2057 {
2058         int retval;
2059         scan_field_t *fields;
2060         int num_fields;
2061         int field_count = 0;
2062         int i, e;
2063         long device;
2064
2065         /* args[1] = device
2066          * args[2] = num_bits
2067          * args[3] = hex string
2068          * ... repeat num bits and hex string ...
2069          */
2070         if ((argc < 4) || ((argc % 2)!=0))
2071         {
2072                 Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
2073                 return JIM_ERR;
2074         }
2075
2076         for (i = 2; i < argc; i+=2)
2077         {
2078                 long bits;
2079
2080                 e = Jim_GetLong(interp, args[i], &bits);
2081                 if (e != JIM_OK)
2082                         return e;
2083         }
2084
2085         e = Jim_GetLong(interp, args[1], &device);
2086         if (e != JIM_OK)
2087                 return e;
2088
2089         num_fields=(argc-2)/2;
2090         fields = malloc(sizeof(scan_field_t) * num_fields);
2091         for (i = 2; i < argc; i+=2)
2092         {
2093                 long bits;
2094                 int len;
2095                 const char *str;
2096
2097                 Jim_GetLong(interp, args[i], &bits);
2098                 str = Jim_GetString(args[i+1], &len);
2099
2100                 fields[field_count].device = device;
2101                 fields[field_count].num_bits = bits;
2102                 fields[field_count].out_value = malloc(CEIL(bits, 8));
2103                 str_to_buf(str, len, fields[field_count].out_value, bits, 0);
2104                 fields[field_count].out_mask = NULL;
2105                 fields[field_count].in_value = fields[field_count].out_value;
2106                 fields[field_count].in_check_mask = NULL;
2107                 fields[field_count].in_check_value = NULL;
2108                 fields[field_count].in_handler = NULL;
2109                 fields[field_count++].in_handler_priv = NULL;
2110         }
2111
2112         jtag_add_dr_scan(num_fields, fields, -1);
2113         retval = jtag_execute_queue();
2114         if (retval != ERROR_OK)
2115         {
2116                 Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
2117                 Jim_AppendStrings(interp, Jim_GetResult(interp), "drscan: jtag execute failed", NULL);
2118                 return JIM_ERR;
2119         }
2120
2121         field_count=0;
2122         Jim_Obj *list = Jim_NewListObj(interp, NULL, 0);
2123         for (i = 2; i < argc; i+=2)
2124         {
2125                 long bits;
2126                 char *str;
2127
2128                 Jim_GetLong(interp, args[i], &bits);
2129                 str = buf_to_str(fields[field_count].in_value, bits, 16);
2130                 free(fields[field_count].out_value);
2131
2132                 Jim_ListAppendElement(interp, list, Jim_NewStringObj(interp, str, strlen(str)));
2133                 free(str);
2134                 field_count++;
2135         }
2136
2137         Jim_SetResult(interp, list);
2138
2139         free(fields);
2140
2141         return JIM_OK;
2142 }
2143
2144 int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2145 {
2146         if (argc == 1)
2147         {
2148                 if (strcmp(args[0], "enable") == 0)
2149                 {
2150                         jtag_verify_capture_ir = 1;
2151                 }
2152                 else if (strcmp(args[0], "disable") == 0)
2153                 {
2154                         jtag_verify_capture_ir = 0;
2155                 } else
2156                 {
2157                         return ERROR_COMMAND_SYNTAX_ERROR;
2158                 }
2159         } else if (argc != 0)
2160         {
2161                 return ERROR_COMMAND_SYNTAX_ERROR;
2162         }
2163
2164         command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
2165
2166         return ERROR_OK;
2167 }